filter_diff Function

public pure function filter_diff(dt, x, fc) result(rst)

Estimates the derivative of a signal by utilization of a second-order system as a filter.

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=real64),	intent(in)			::	dt	The time step between data points.
real(kind=real64),	intent(in),		dimension(:)	::	x	An N-element array containing the data whose derivative is to be estimated.
real(kind=real64),	intent(in)			::	fc	The filter cutoff frequency, in Hz.

Return Value real(kind=real64), allocatable, dimension(:,:)

An N-element array containing the filtered signal in the first column and the derivative estimate in the second.